Northumberland Strait
Forecast
Marine Forecast
Issued 03:00 AM ADT 21 June 2025
Today Tonight and Sunday.
Strong wind warning in effect.
Wind westerly 25 knots diminishing to northwest 15 near noon and to light this evening. Wind becoming southerly 10 to 15 Sunday morning.
Scattered showers ending near noon. Scattered showers Sunday afternoon and evening.
Extended Forecast
Issued 03:00 AM ADT 21 June 2025
Monday
Wind variable 10 to 15 knots.
Tuesday
Wind southwesterly 15 to 20 knots.
Wednesday
Wind southwesterly 15 to 20 knots veering to
northwest 20.
Stay connected
Weather Conditions
Zoom-in to make a selection

Legend:


Ice Conditions
Ice Forecasts
Issued 10:00 AM EDT 26 May 2025 Forecasts have ended for the season.Warnings
Warnings (In effect)
Strong wind warning in effect
Northumberland Strait
Issued 03:00 AM ADT 21 June 2025'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.
Synopsis
Technical Marine Synopsis
Issued 3:00 AM ADT 21 June 2025 Today Tonight and Sunday At 3:00 a.m. ADT today low 993 mb located over eastern AnticostiIsland.
By 3:00 a.m. ADT Sunday departing low 996 mb located over Labrador
Sea.
At 3:30 p.m. ADT today ridge located over Quebec.
By 3:00 a.m. ADT Sunday ridge located from Labrador to Georges Bank.
At 3:00 a.m. ADT Sunday approaching low 1000 mb located over
southern Quebec.
Marine Weather Statement
Issued 2:50 AM ADT 21 June 2025 A low pressure system over Eastern Anticosti will continue to movenortheast to lie over the Labrador Sea by tonight. Strong to gale
force west to northwest winds will diminish through the day today.
Marine interests are advised that gale warnings are in effect for
Cabot Strait - northern half, Gulf - Magdalen and Anticosti.
Atlantic - Newfoundland Area
- Anticosti - eastern half
- Anticosti - western half
- Banquereau
- Belle Isle Bank
- Bras d'Or Lakes
- Cabot Strait - northern half
- Cabot Strait - southern half
- Chaleur - Miscou - eastern half
- Chaleur - Miscou - western half
- Eastern Shore
- East Coast
- Fourchu
- Funk Island Bank
- Gulf - Magdalen - northeastern half
- Gulf - Magdalen - southwestern half
- Gulf - Port au Port
- Lake Melville
- Laurentian Fan
- Mid Labrador Coast - Hopedale and south
- Northeast Coast
- Northeast Gulf
- Northern Grand Banks
- Northumberland Strait
- Sable
- Southeastern Grand Banks
- Southwestern Grand Banks
- Southwest Coast
- South Coast
- South Labrador Coast
- South Labrador Sea - northwestern half
- South Labrador Sea - southeastern half
- Strait of Belle Isle - eastern half
- Strait of Belle Isle - western half
Another Region
- Date modified: